Round-top extension-table.



J. BOOKER. ROUND TOP-EXTENSION TABLE. APPLICATION FILED JULY 1, 1912.

1,079,099. Patented Nov. 18, 1913.

w 22 1;;3 S19v 3s 1 f f I F/fi. .4" l 4 M T 3 36 I T 2 H 3 2| I l I b 158 {I '1 1 26 f: I FIG 4 WITNESSES INVENTOR flV Q ATTORNEY UMTED STATESPArErrr OFFICE.

JAMES BOOKER, OF SAN FRANCISCO, CKLIFORNIA, ASSIGNOR OF ONE-HALF TO JOHNH. HENDERSON, OF SAN FRANCISCO, CALIFORNIA.

ROUND-TOP EXTENSION-TABLE.

Specification of Letters Patent.

Patented N v. 18, 1913.

To (ZN whom it may concern Be it known that 1, JAMES BooKER, a citizenof the United States, residing at San Francisco, in the county of SanFrancisco and State of California, have invented new and usefulImprovements in Round Top Extension-Tables, of which the following is aspecification.

The object of the present invention is to provide a round table of suchconstruction that it can be extended or enlarged when greater capacityis needed, and can be folded or reduced'in size when the smaller size ismore convenient, in both cases retaining its circular form.

In the accompanying drawing, Figure 1 is a vertical section of myimproved table extended; Fig. 2 is a horizontal section showing inbottom plan view the top of the table partly extended and partly foldedor collapsed; Fig. 3 is a detail sectional view on the line 33 of Fig.2, except that the folding leaf is in its intermediate position, notfully extended; Fig. 4 is a detail perspective view of an extension arm.

Referring to the drawing. 1 indicates a base, supported upon casters 2,and in which is fitted a standard 3. On the top of said standard, andsupported thereby, is a hub 4 confined by bolts 5 between two metallicplates or disks 6, 7 A bolt 8 passes centrally through said disks, hub,standard, and base, and upon the lower end of said bolt is screwed a nut9, whereby said bolt secures all of said parts together. From said hubextend radially, at equal angular intervals, six horizontal arms 11,upon which arms, and upon the hub 4, rests.tlie table top proper 12.Said top is circular in form, and has hinged thereto, each by two hinges13 on the under side thereof, three extension leaves 14. Each leaf 14 isdirectly hinged to the under side of the table top 12, and is of ageneral arcuate shape, of uniform width throughout its length, and ,ofsuch a form that, when it is swung on its hinges so as to lie in thesame plane as the table top 12, its inner arcuate edge, adjacent to saidhinges 13, will fit closely against the edge of the table top, the'outeredge will be in a circle havingthe same center as the table top 12, andits terminal edges will extend radially Irom said center. \Vings 16,similar in term to the leaves 14 except that they are only ofone-halfthe length, are hinged, as

shown at 17, to each leaf at the radially extending ends of the latter,springs 18 being provided to move the wings upward into place. \Vheneach leaf, and the wings hinged thereto, are thus extended so as to liein the plane of the table top, they extend around through an angle of120, so that, when all of said leaves and wings are so placed, they forman annular extension of uniform width around the table top, and theextended table top is still circular in form, but of greatly increaseddiameter.

Each arm 11 is formed in the upper side with a longitudinal channelextending substantially its whole length, and in which can slide anextension arm 38, to the inner endof each extension arm is connected theinner end of a coiled spring 19, which can move in a groove 21 formed inthe top of said extension arm, and the outer end of whicl 'is connectedto the under side of the table top proper 12. sion arms, when extended,lie beneath, and support, the central portion of the leaves 14, whilethe other three, alternating with the former three, lie beneath andsupport the adjacentouter edges of the wings 16. In order to insure thewings and leaves making, when extended, closely fitting joints with thetable top 12, so that the extended table top will have a plane uppersurface, their ends, when extended engage spring plates 22 secured onthe under sides of said leaves and wings.

In order to retain -each extension arm ,in

Three of these extenits collapsed position against the action of k itsspring. 19, said arm is formed on one side with a socket 2 4 which isadapted to be engaged by a' la ching lever 25 pivoted, as shown at '26,on the under side of the central portion 12, and passing through a hole27 win the side of the corresponding radially extending arm 1l,the otherarm of which lever 1S pressed in a direction to normally cause saidlatch 25 to enter said socket 24 by a IQQ ring 34 surrounds thestandards 3, and is supported thereon by screws 35 passing through slots36. From said ring extend upwardly arms 37, which in one position ofsaid ring extend beneath said leaves-when in their folded position. Byrevolving said ring through the length of said slot, said arms are movedto sucha position that they no longer support said leaves, which canthen be extended.

I claim 1. In a round top extension cable, the combination of a centralstandard, a hub thereon, arms radiating rigidly from saidhub, a roundtable top supported by said arm, extension leaves having inner and outercurved edges, each leaf being hinged to the under side of the table topin a line through the ends of the inner edge of said leaf, terminalwings hinged to each extension at its ends, extension arms guided bysaid first-named arms for supporting alternately said leaves and wings,springs for projecting said extension arm, and latches for holding saidextension arms in their retracted position,

side of the table top in a line through the ends of the inner edge ofsaid leaf, terminal wings hinged to each extension at its ends.

extension arms guided by said first-named arms for supportingalternately said leaves and wings, springs on the under sides of saidwings and leaves, adapted to be en gaged by the upper sides of saidextension arms when extended.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JAMES BOOKER. Witnesses:

F. M. WRIGHT,

- D. B. RICHARDS.

Copies of this pat ent may be obtained for flve cents each, byaddressing the Commissioner of Patents,

Washington, D. G."

lit!

